glados, chell: Adjust microphone gain
There are user complaints about external microphone gain too small after
WebRTC AGC adjusts the gain.
In this CL we fix this by:
- Increase the upper limit of internal microphone gain to 24 dB so the
value of system gain is aligned for internal/external microphone.
This makes WebRTC less confused.
- Increase the default node gain of external microphone gain to 8dB.
This should make external microphone works better.
BUG=chromium:775206
TEST=check external microphone gain is above 20 dB after WebRTC usage.
Change-Id: I24b53971540c03956296f28813dbc3dc9f02bf2e
Reviewed-on: https://chromium-review.googlesource.com/737515
Commit-Ready: Cheng-Yi Chiang <cychiang@chromium.org>
Tested-by: Cheng-Yi Chiang <cychiang@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
1 file changed